crate doesnt compile on arduino

[antonilol]

on this target, u8, u16, u32, u64 and usize all have an align of 1, usize is 2 bytes wide (like u16), so my project doesnt compile because i (transitively) depend on bitvec, which doesnt compile on this target

i get multiple errors like this one:

error[E0308]: mismatched types
   --> /home/antoni/.cargo/registry/src/index.crates.io-6f17d22bba15001f/bitvec-1.0.1/src/store.rs:126:7
    |
126 |                   = [(); mem::aligned_to_size::<Self>() as usize];
    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected an array with a fixed size of 1 element, found one with 0 elements
...
188 | / store! {
189 | |     u8 => BitSafeU8;
190 | |     u16 => BitSafeU16;
191 | |     u32 => BitSafeU32;
192 | | }
    | |_- in this macro invocation
    |
    = note: this error originates in the macro `store` (in Nightly builds, run with -Z macro-backtrace for more info)

somewhat related to #76

[antonilol]

i do find this a weird way to enforce layout compatibility as this gives no guarantees for unsafe code, but this should be the only code that relies on layout compatibility